Astronomy Specialist

TAKAHASHI ORTHO-BARLOW 2x

$249.00
SKU: TK-TKA00598

Takahashi


 

The Takahashi 2x Ortho-Barlow is a focal extender that does not degrade image quality, unlike many traditional Barlow lenses.

Like all Takahashi eyepieces and Barlows, the Ortho-Barlow was developed in combination with an aberration-free optical system (in this case, the true reference-grade TOA-series refractors) to ensure that no additional aberrations were introduced by the Barlow. In fact, by pairing the Ortho-Barlow with Takahashi TPL eyepieces, a better quality image at both the centre of the field and the edge is produced than without the Ortho-Barlow. Additionally, any residual extremely minor chromatic aberration of the TOA objective is cancelled out completely. 

 

 

The Ortho-Barlow's 2x magnification can be varied by changing the distance between the eyepiece or camera sensor according to this formula: [magnification] = 2 + 0.0121 x D, where D is the distance between the end of the Barlow's T-thread to the sensor surface or entrance diaphragm of the eyepeice.


Specifications

 

Magnification factor
2 x
Optical design
Ortho-Barlow
Connection telescope side
1.25" barrel
Connection eyepiece side
1.25" nosepiece, T2 (M42 x 0.75) thread
Weight 130 g
SKU TK-TKA00598

 

TAKAHASHI ORTHO-BARLOW 2x

$249.00

Optical design

Image circle

Focal ratio

Aperture

Focal length

Optical thickness

Threads

1.25" Barrel, M42 x 0.75 Male

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

Length

Width

Height

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